Question

Tarnishing of silver is an example of which type of corrosion?

(a) Crevice corrosion

(b) Pitting corrosion

(c) Uniform corrosion

(d) Erosion corrosion

This question was addressed to me during an interview for a job.

I need to ask this question from Eight Forms in section Eight Forms of Corrosion of Corrosion Engineering

Answer 1

Correct answer is (c) Uniform corrosion

Explanation: Outermost layers of silver undergoes a chemical reaction with hydrogen sulfide results in tarnish. This is known as the tarnishing of silver. Metals like brass, copper, aluminum, silver, and magnesium undergoes tarnishing under various corrosive environments.